antifreeze really isn't that hard. Just pull the hose off the bottom of the RWP, clamp it around my clear hose section, stick that in a bucket of antifreeze and start the engine. I'm coming from a Moomba though and I'm not 100% sure where all the drain points are on this specific boat or what it takes to to it all. The Moomba had 2 plugs in the bottom of the block that the knock sensors hooked to for the main drains....is that about the same on this boat? (plus hoses)